Take some more advanced, 300-level classes in your major to start showing vigor of intellectual activity.
Begin preparing for the LSAT if you have time. It is important however that the time you put in to preparing for the LSAT does not negatively affect your school work.
Start obtaining material to give to professors for letters of recommendation. These materials can be found on the law school's admission website
Start exploring law schools by going to law school fairs, looking at websites, and making visits to law schools. Boston College Law School locator is a great online site to help you compile a list of tentative schools.
Register with LSAC
Prepare for the LSAT if you haven't in the fall
Start getting letters of recommendation
Continue exploring law school options
Start drafting your personal statement
Take LSAT for the first time in June
Continue work on your personal statement
Submit your transcripts from any schools attended submitted to LSAC after verifying their accuracy